Tube.



E. H'. ANGIR.

TUBE.

APPLICATION FILED NOV. I3. 1914A. l '1,4%903., Patented 001. 16,1917.

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vented an Improvement in Tubes,'of which the following description in connection with the accompanying drawings, is a speciiication, like characters on the drawings representing like parts.

This invention relates to tubes and aims ment with one another and to contribute 15o the strengthening of lthe tube as a whole,

to provide a strong and simple construction which may be empleyedffor a variety of uses.

The character of the invention may be best understood by reference to the following description of an illustrativeemb'odiment .thereof shown in the accompanying drawing, wherein:

Figure 1 is a view partlyin-side elevation and partly broken away of an illustrative tube shown herein as embodying the invention;

Fig. 2 on an enlarged scale is a transverse section through the tube shown in Fig'. 15

Fig. 3 is a plan of sheet material which may be used in constructing the tube g' and Flslg). 4 is a section taken on line' of Referring to the drawing, the illustrative tube shown therein as embodying the invention comprises an inner layer lincluding strips and 5 of paper or' other appropriate material having a layer 7 of black asphaltum or other appropriate adhesive interposed between them. The black asphaltum 1s advantageous since it is water-proof and catribute tothe strength of the layer, threads l 9 may be introduced between the layers 3- and 5 and be embedded in the water-'prooil I Y internallythereof. If the coating layer 1s layer 7.

A layer formed as described ina-y be wound in helical form on a mandrel 11.v

The strip is wound to present edges engaging along helical lines--13 and secured toand consequently the lines 15 formed bythe meeting edges of the strip crossthe helical lines 13 marking vthe )uncture of; the

terials, as, a conduit for conducting' gases or meeting edges of the? strip# 'The specification of maceratese L Patented egim, 36919117; application inea novemberie, ism; serial no. svaoio.

ing of (these lines is advantageous since it erds to prevent transverse rupture of the u e" l 'lo further strengthen the be provided tension threads'? distributed at intervals circumferentially'fo the tube and extending longitudinally thereof. As

tube there may" shown herein these threads are interposed f between the outer` and innerlayers.

To secure the two layers in strong engage:

a layer 19 of silicate of soda or other apa` -propriiate adhesive may be interposed between said layers. The lon itudinal tension threads 17 Vmay be embedde in this adhesive ayer@ A Each layer as shown herein is of composite construction. There are advantages in using this constructiton, but in some cases 'the layer may be of a single4 strong sheet ofi' paper or other appropriate material. 4

While the layers are shown herein as heli'- cally wound, they may he spirally or otherwise wound as desired. It will be understood that itis not indispen'sable that the longitudinal tension j threads should be interposed 'between .the outer `and inner layers or that the lhellcal wound strengthening threads be interposed betweenV the strips of one layer since they' may be variously disposed as'desired. While two layersl have been shown herein, obviously any number of layers may be employed according 'to the strength demandedl by the use to which the tube is to be applled.

The tube as a whole may be dipped 1n an f adhesive bath such, forexamplc, as silicate of soda orasphaltum, or both, and thus will receive' a coating layer. both externally'and of asphaltum the tube will befortified against the ingress ofA moisture both from' 1 -within and from without; j

Av tube constru'ctedas describedl maybe employed for a' variety of uses. Among others, it may be used asafinailing tube, as afform on which materials may be Wound,

asa container for various. articles or maf se ving described one .illustrative embodi-v In l such. use, the tube wouldserve as a mold in hich the concrete would be filled.

. Qv x *Y ffifiasoav i. spiral layers,

sire 'tosecure by Letters Patent is z` LA tube eomprisinga-plurality of layers, each -comprising spirally-wound, ribbon like stripsf, 5, an adhesivelayer between said strips, and spirally-.Wound tensifn an a 2. A". tube comprisingoppositel strips 3,-5, a waterproof adhesive layer 7 between said strps,' and tension threads 9 embedded in said adhesive layer; and an adhesive layer 19 between said layers.

3. A tube comprising a plurality of layment oflfthefinyention without ,limitin/ theA same'thereto, what claim as new an(` de v them, and an adhesive layer 19 between ers, each vcomprising vspirally wo'und strips 3, 5, with a waterproof layer 7 between said first-named layers. e

LA tube comprising a plurality of layers, yeach Comprising spirally wound strips 3, 5, with a- Waterproof layer 7 between them, and an adhesive layer 19 between said first-named layers having ,tension threads' V17 therein.

In testimony whereof, I have. signed my name to this specification, in the :presence of ytwo subscribing witnesses.

v v EDWARD H. -ANGIER' Witnesses:

ROBERT H. KAMMLER HENRY'T. WHLIAMS, 

